No, it's not about that. That looks just like a fancy chain letter. Cancer is no joke, I have lost relatives because of cancer. My grandmother has had it twice. It has to do with the fact I get e-mails like this all the time, and other websites like that saying they will donate if you forward a link to somebody they will do some great cause. If they were going to, they would anyways. Many of the times there is a catch. See, they want your name, and e-mail, as well as someone elses' e-mail and name. Don't be suprised if you get spammed real bad after this. Regular spam gets blocked by most services, but usually if they know your name and all, it passes through.
"I'm a seven year old girl, I have cancer, if you send this e-mail to 5 people the hospital will put $200 towards my cure." I got this bs once.